File Name: lymphatic system test questions and answers .zip
Mature T cells then may either circulate in the lymph or blood or reside in lymph nodes.
- Lymphatic System Anatomy and Physiology
- Lymphatic System Practice Test
- The Lymphatic System: Multiple Choice
Lymphatic System Anatomy and Physiology
The lymphatic system is a network of tissues, vessels and organs that work together to move a colorless, watery fluid called lymph back into your circulatory system your bloodstream. The lymphatic system collects this excess fluid, now called lymph, from tissues in your body and moves it along until it ultimately returns it to your bloodstream. The lymphatic system collects excess fluid that drains from cells and tissue throughout the body and returns it to the bloodstream, which is then recirculated through the body.
Some happen during development before birth or during childhood. Others develop as a result of disease or injury. Some common and less common diseases and disorders of the lymphatic system include:. Call your doctor if you experience fatigue extreme tiredness or have unexplained swelling that lasts more than a few weeks or interferes with your daily activities. To see if your lymphatic system is working as it should, your doctor may use imaging tests such as a CT scan or MRI. These tests allow your doctor to see blockages in your lymphatic system.
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Lymphatic System Your lymphatic system, part of your immune system, has many functions. They include protecting your body from illness-causing invaders, maintaining body fluid levels, absorbing digestive tract fats and removing cellular waste.
Appointments The lymphatic system is a network of tissues, vessels and organs that work together to move lymph back into your your bloodstream. The lymphatic system is part of your immune system. What is the lymphatic system? Your lymphatic system actually has many functions. Its key functions include: Maintains fluid levels in your body: As just described, the lymphatic system collects excess fluid that drains from cells and tissue throughout the body and returns it to the bloodstream, which is then recirculated through the body.
Absorbs fats from the digestive tract: Lymph includes fluids from the intestines that contain fats and proteins and transports it back to the bloodstream. Protects your body against foreign invaders: The lymphatic system is part of the immune system. It produces and releases lymphocytes white blood cells and other immune cells that monitor and then destroy the foreign invaders — such as bacteria, viruses, parasites and fungi — that enter the body.
Transports and removes waste products and abnormal cells from the lymph. What are the parts of the lymphatic system? The lymphatic system consists of many parts. These include: Lymph: Lymph, also called lymphatic fluid, is a collection of the extra fluid that drains from cells and tissues that is not reabsorbed into the capillaries plus other substances.
The other substances include proteins, minerals, fats, nutrients, damaged cells, cancer cells and foreign invaders bacteria, viruses, etc. Lymph also transports infection-fighting white blood cells lymphocytes. Lymph nodes: Lymph nodes are bean-shaped glands that monitor and cleanse the lymph as it filters through them. The nodes filter out the damaged cells and cancer cells. These lymph nodes also produce and store lymphocytes and other immune system cells that attack and destroy bacteria and other harmful substances in the fluid.
You have about lymph nodes scattered throughout your body. Some exist as a single node; others are closely connected groups called chains. A few of the more familiar locations of lymph nodes are in your armpit, groin and neck.
Lymph nodes are connected to others by the lymphatic vessels. Lymphatic vessels collect and filter lymph at the nodes as it continues to move toward larger vessels called collecting ducts. These vessels operate very much like your veins do: they work under very low pressure, have a series of valves in them to keep the fluid moving in one direction.
Collecting ducts: Lymphatic vessels empty the lymph into the right lymphatic duct and left lymphatic duct also called the thoracic duct. These ducts connect to the subclavian vein, which returns lymph to your bloodstream. The subclavian vein runs below your collarbone. Returning lymph to the bloodstream helps to maintain normal blood volume and pressure.
It also prevents the excess buildup of fluid around the tissues called edema. Spleen: This largest lymphatic organ is located on your left side under your ribs and above your stomach. The spleen filters and stores blood and produces white blood cells that fight infection or disease. Thymus: This organ is located in the upper chest beneath the breast bone. It matures a specific type of white blood cell that fights off foreign organisms.
Tonsils and adenoid: These lymphoid organs trap pathogens from the food you eat and air you breathe. Bone marrow: This is the soft, spongy tissue in the center of certain bones, such as the hip bone and breastbone.
White blood cells, red blood cells, and platelets are made in the bone marrow. These lymphoid cells monitor and destroy bacteria in the intestines. Appendix: Your appendix contains lymphoid tissue that can destroy bacteria before it breaches the intestine wall during absorption.
What conditions affect the lymphatic system? Many conditions can affect the vessels, glands, and organs that make up the lymphatic system. Some common and less common diseases and disorders of the lymphatic system include: Enlarged swollen lymph nodes lymphadenopathy : Enlarged lymph nodes are caused by infection, inflammation or cancer.
Common infections that can cause enlarged lymph nodes include strep throat, mononucleosis, HIV infection and infected skin wounds. Lymphadenitis refers to lymphadenopathy that is caused from an infection or inflammatory condition. Swelling or accumulation of fluid lymphedema : Lymphedema can result from a blockage in the lymphatic system caused by scar tissue from damaged lymph vessels or nodes.
The buildup of lymphatic fluid is most commonly seen in the arms and legs. Lymphedema can be very mild or be quite painful, disfiguring and disabling. People with lymphedema are at risk for serious and potentially life-threatening deep skin infections. Cancers of the lymphatic system: Lymphoma is cancer of the lymph nodes and occurs when lymphocytes grow and multiply uncontrollably.
Cancerous tumors can also block lymphatic ducts or be near lymph nodes and interfere with the flow of lymph through the node. Other disorders include: Lymphangitis: This is an inflammation of the lymph vessels.
Lymphangioma: This is a condition that you are born with. Lymphangiomatosis is the presence of multiple or widespread lymphatic vascular malformations. Intestinal lymphangiectasia: This is a condition in which loss of lymph tissue in the small intestine leads to loss of protein, gammaglobulins, albumin and lymphocytes. Lymphocytosis: This is a condition in which there is a higher-than-normal amount of lymphocytes in the body.
Lymphatic filariasis: This is an infection caused by a parasite that causes the lymphatic system not to function correctly. Lymphangioleiomyomatosis: This is a rare lung disease in which abnormal muscle-like cells begin to grow out of control in the lungs, lymph nodes and kidneys. Autoimmune lymphoproliferative syndrome: This is a rare genetic disorder in which there is a high number of lymphocytes in the lymph nodes, liver and spleen.
Mesenteric lymphadenitis: This is an inflammation of the lymph nodes in the abdomen. Tonsillitis: This is an inflammation and infection of the tonsils. How can I keep my lymphatic system healthy? To keep your lymphatic system strong and healthy, you should: Avoid exposure to toxic chemicals like those in pesticides or cleaning products.
These chemicals can build up in your system and make it harder for your body to filter waste. Drink plenty of water to stay hydrated so lymph can easily move throughout the body.
Maintain a healthy lifestyle that includes regular exercise and a healthy diet. When should I call my doctor about an issue with my lymphatic system? How will my doctor test my lymphatic system? Show More.
Lymphatic System Practice Test
The lymphatic system has a variety of functions in the body. It collects excess interstitial fluid and returns it to the blood cardiovascular system , it has lymph nodes that screen the lymphatic fluid for pathogens immune system , and it reroutes fat digestates to the neck veins digestive system. The lymphatic system does not aid the endocrine system, as hormones travel in the bloodstream. You either know the anatomy of lymphatic flow, or you don't and you need to review it. All statements are true. The thoracic duct is the major collecting point for lymph from both lower limbs, the intestine, and certainly the left arm and left side of the head and neck. It empties into the junction of the left subclavian vein and the left jugular vein, most commonly.
The lymphatic system is a network of tissues, vessels and organs that work together to move a colorless, watery fluid called lymph back into your circulatory system your bloodstream. The lymphatic system collects this excess fluid, now called lymph, from tissues in your body and moves it along until it ultimately returns it to your bloodstream. The lymphatic system collects excess fluid that drains from cells and tissue throughout the body and returns it to the bloodstream, which is then recirculated through the body. Some happen during development before birth or during childhood. Others develop as a result of disease or injury. Some common and less common diseases and disorders of the lymphatic system include:.
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The Lymphatic System: Multiple Choice
The lymphatic system in the human body is responsible for the removal of interstitial fluid from tissues. This system is tasked with the absorption and transport of fatty acids from the digestive system. In this chapter, answer all the lymphatic system practice questions below and get to refresh your memory.
The lymphatic system clears away infection and keeps your body fluids in balance. If it's not working properly, fluid builds in your tissues and causes swelling, called lymphedema. Other lymphatic system problems can include infections, blockage, and cancer.
Mature T cells then may either circulate in the lymph or blood or reside in lymph nodes. The spleen is not a site of T cell maturation, though it does have other important immune functions, such as the production of antibodies and the removal of antibody-coated pathogens. Dietary fat is absorbed via lacteals, small lymph vessels contained within the body of the intestinal villi. Microvilli, tiny projections covering the surface of the villi, help with the absorption of minerals, vitamins, and other micronutrients. The lymphatic system has several roles in the body, including drainage of interstitial fluid from tissues, transportation and activation of lymphocytes, and absorption and transportation of dietary fats.
The lymphatic system has a variety of functions in the body. It collects excess interstitial fluid and returns it to the blood cardiovascular system , it has lymph nodes that screen the lymphatic fluid for pathogens immune system , and it reroutes fat digestates to the neck veins digestive system. The lymphatic system does not aid the endocrine system, as hormones travel in the bloodstream. You either know the anatomy of lymphatic flow, or you don't and you need to review it. All statements are true. The thoracic duct is the major collecting point for lymph from both lower limbs, the intestine, and certainly the left arm and left side of the head and neck.
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Есть, но отец ее заблокировал.
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